10 things you didn't know about Microsoft Cofounder Paul Allen

Image via PaulAllen.com.
Microsoft Cofounder Paul Allen's sixty-fifth birthday is today. Here are 10 facts about the man you might not have known.
When you think of Microsoft and the men behind the company, one name probably comes to mind: Bill Gates. But most Microsoft fans also know that Gates did not found the company on his own, and Paul Allen, a childhood friend of Gates, is the company's cofounder.
Gates's name is more synonymous with Microsoft because he stuck with the company for a much longer period. But do you know when Allen left Microsoft? And why?

The answers to those questions are listed right here. Today is Paul Allen's birthday, and it's a big one; the man is now considered a "senior citizen" in the U.S. Today Allen is 65 years old. In honor of this momentous day in the life of a momentous man in Microsoft's storied history, we rounded up some quick facts about Allen.